PMID- 17302747 OWN - NLM STAT- MEDLINE DCOM- 20070315 LR - 20220311 IS - 0933-7407 (Print) IS - 0933-7407 (Linking) VI - 50 IP - 1 DP - 2007 Jan TI - Diagnosis of paracoccidioidomycosis by a dot blot assay using a recombinant Paracoccidioides brasiliensis p27 protein. PG - 41-7 AB - A variety of immunological methods have proven useful for Paracoccidioidomycosis (PCM) diagnosis; however, they are often time consuming and many lack sensitivity and specificity, partially attributed to the use of crude antigens, which give cross reactivity. Until now, attempts to clone and express Paracoccidioides brasiliensis immunodominant antigens have presented difficulties of process and problems of cost. In an attempt to obtain a more rapid, sensitive, and specific test for PCM diagnosis, we subcloned the P. brasiliensis p27 gene and used the recombinant protein as the antigen in dot blot assays to evaluate its usefulness in paracoccidioidomicosis diagnosis. The development of an optimised procedure for p27 recombinant protein purification and production led to an easier and less expensive process than the one previously used in our laboratory and allowed the availability of enough purified protein for its evaluation as the antigen in the dot blot assays. In these assays, antibodies present in ten serum samples from seven patients with PCM recognised the recombinant protein showing a sensitivity of 100% with a specificity of 98%. These results confirm the value of the 27-kDa recombinant antigen in the serodiagnosis of paracoccidioidomycosis and that the dot blot format is an alternative to the immunoenzymatic assay procedure. FAU - Correa, M M AU - Correa MM AD - Grupo de Microbiologia Molecular, Escuela de Bacteriologia y Laboratorio Clinico, Universidad de Antioquia, Medellin, Colombia. mcorrea@quimbaya.udea.edu.co FAU - Bedoya, A M AU - Bedoya AM FAU - Guerrero, M P AU - Guerrero MP FAU - Mendez, J AU - Mendez J FAU - Restrepo, A AU - Restrepo A FAU - McEwen, J G AU - McEwen JG LA - eng PT - Evaluation Study PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Germany TA - Mycoses JT - Mycoses JID - 8805008 RN - 0 (Antibodies, Fungal) RN - 0 (Antigens, Fungal) RN - 0 (Fungal Proteins) RN - 0 (Recombinant Proteins) SB - IM MH - Antibodies, Fungal/*blood MH - Antigens, Fungal/genetics/*immunology MH - Blotting, Western MH - Fungal Proteins/genetics/*immunology MH - Humans MH - Paracoccidioides/*immunology MH - Paracoccidioidomycosis/*diagnosis/microbiology MH - Recombinant Proteins/genetics/*immunology MH - Sensitivity and Specificity EDAT- 2007/02/17 09:00 MHDA- 2007/03/16 09:00 CRDT- 2007/02/17 09:00 PHST- 2007/02/17 09:00 [pubmed] PHST- 2007/03/16 09:00 [medline] PHST- 2007/02/17 09:00 [entrez] AID - MYC1306 [pii] AID - 10.1111/j.1439-0507.2006.01306.x [doi] PST - ppublish SO - Mycoses. 2007 Jan;50(1):41-7. doi: 10.1111/j.1439-0507.2006.01306.x.